Shuttle-operating mechanism.



G. G. SANDS.

SHUTTLE OPERATING IJICHANISM.

APPucATIloN min ma. Io, 1914.

` 1,133,413. Patented May 4,1915.

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GUY e. sANDs, or EAST 4eREnNvILLn PENNSYLVANIA.

. Appii'catimiaieaiaarh 1o, 1914. seria'i 110.823,70.

ToaZZ whom t may con-cern.'

Be it known that I, GUY G. zen of the United States, anda resident'ofEast Greenville,l in( the county of, Mont- 5 gomery andStateofPennsylvania, have invented a newand Improved Shuttle-OperatingMechanism, of 4which the following is a full, clear, and exactdescription.

The invention relates to looms having a series of shuttles forsimultaneously weaving a plurality of ribbonsror other narrow Ware.. l

The object of the invention is to provide a new and improved shuttleoperating mechanism arranged to impart a positive and accurate movementto the shuttles without danger of breaking the operating straps.

In order to accomplish the desired result,v

use is made of a rack bar provided with a pin engaging a spiral -grooveformed in the peripheral face of a roller driven alternately in oppositedirections by 'suitable means connected with the crank shaft.

A practical embodiment of the invention is represented in theaccompanying drawings' forming a partl of this specification, in whichsimilar characters of reference indicate correspondingparts in all theviews.`

Figure l is a side elevation of a loom of 3o |the type referred to andprovided with the improved shuttle operating mechanism; F ig. 2 is anenlarged front elevation `of the shuttle operating mechanism; and Fig. 3is an enlarged front view of a modified form 85 of the spiral groove inthe roller.

The loom is provided with the usual lay A having a series of spacedshuttle races B in which are mounted to travel shuttles C alternately inopposite directions with a 40 view to pass forward and backward throughthe open shed. Each of the shuttles C is provided with a rack I) in meshwith the top of a pinion E journaled in the corresponding shuttle raceB, ions E are i-n mesh at their bottoms with a rack F mounted to slidein suitable bearings arranged on the-lay A. 'The rack F is provided nearone'end with a depending' pin G engaging a spiral groove H formed in theK0 peripheral face of the roller H journaled in a bracket I attached toand depending from the lay A. The ends of the spiral groove H 'terminatein straight transverse grooves H2, H3 so that when the roller `H isalternately turned in opposite directions then an intermittentreciprocating motion is ySpeel-iication of Letters Patent. I

SANDs,a citi- .two bands L and L and the said pinprismgSHUTTLE-OPERATING-NLECHANISM Patented May 4, 1915.

lgiven to the pin G andcthe bar F whereby the latter Aturns the pinionsE to cause the shuttle C to travel forward and backward through the opensheds. By having the straight ends H2, H3 the shuttles C remain at restfora-short period at the end of each stroke, that is, during the timethe lay beats up the filling and the harness .changes the warp threads,and the lay returns to rearmost position to again open the sheds.

Suitable mechanism is employed for turning the roller H alternately inopposite directions, such being, for instance, arranged as follows: Onthe rollerI-I is secured a gear wheel J in mesh with a gear wheel Jsecured on a driving roller K journaled in the bracket I. To theperipheral facev of the roller K are secured the'upper'ends of extendingfrom opposite sides of the roller K and passing around pulleys N, Njournaled on the stud N2 held onthe frame O of the loom (see Fig. l).The lower ends of the attached to the pivoted ends of an arm' I securedon the shaft Q wheel Q, .in mesh with a gear wheel R sebands L and Lare.

of an elliptical gear cured eceentrically on the crank shaft S of theloom and which crank shaftis connected by` links T with the lay A torockthe latter in the usual manner. It will be noticed that when the loom isrunning a rocking motion isgiven to' the arm P so that a pull is exertedalternately on the bands L, L to turn the driving roller K alternatelyin the opposite direction. .This turning action of the operating rollerK is transmitted by the gear Wheels J and J to the roller H whereby anintermittent reciprocating motion is given to the' rack bar Fand theshuttle C, as previously explained. l

As shown in Fig. 2, the spiral groove H of the' roller I-I has a singleconvolution,

Abut the spiral groove may consist of two or more convolutions, asindicated in Fig. 3. This construction is very serviceable in loomsusing large shuttles, and by providing two convolutions between the endsH2, HS, the spiral groove is less abrupt and hence the pin G travelseasier in the said spiral groove. Having thus described claim as new andPatent:

`1. A shuttle operating mechanism, coma shuttlehaving a rack, a rackbar, apinion directly vin mesh with the said shutmy invention, I desireto secure by Letters tle rack andthe said rack har,` a pin on the saidrackhar, a roller having a spiral groove'H engaged by the said pin, thesaid spiral groove .terminating 1n` short transverse grooves,'and meansoperatively connected with the crankshaft of the loom for imparting aturning motion to the said roller alternately in opposite directions,and thereby give an alternate reciprocating motion to the rack.

2. A shuttle operating mechanism, comprising a shuttle having arack, arack bar,

a pinion in mesh With the said shuttle rack I and said rack bar,a pinon'the said rack bar, a roller having a spiral groove engaged by thelsaid pin, the said spiral groove terminating at each end in shorttransverse grooves, a driving roller, gear Wheels connecting'the saidgrooved roller with the said driving roller, driving bands connectedwith the peripheral face of the said driving roller and extending fromopposite sides thereof, an arm to which the said bands are secured, ashaft upon Which said arm is secured, an elliptical gear on said shaftand engaged by aneccentrically mounted pinion secured to the crank shaftof the loom.

ln testimony whereof I have `signed my name to this specification in thepresence of two subscribing Witnesses.

GUY G. SANDS. Witnesses:

' HORACE A. ROYER,

DANIEL R. KRAUSE.

Copies of this patent may be obtained for ve cents each, byaddressing-the Commissioner of Patents,

' Washington, D. C.

